500 batches of pigments are produced each week in the plants Quality Assurance program each batch is subjected to a precise color analysis test. If a batch does not pass the test, it is rejected and back reformulation. Let Y be the number of bad batches produced per week and suppose that Q\&A test results for 12-week base period as follows Y=Y+3sY Estimate the bad batches in a week would it take to shut down the process